Basic Operation Of A Matrix Switcher - Panasonic WJ-SX550A Operating Instructions Manual

BASIC OPERATION OF A MATRIX SWITCHER

Crosspoint Switches
1
All Matrix Switchers, no matter how complicated and sophisticated they may be, depend on crosspoint switches to perform the
basic operations of the switcher. The crosspoint switches form a rectangular array of rows and columns in which any row may be
connected to any column.
In the Matrix Switcher shown above, the rows are connected to video cameras and the columns are connected to video monitors.
By closing a certain crosspoint switch we may connect any camera to any monitor.
In the example above, by closing switch SW12, camera 2 is displayed on monitor 1. Likewise, by closing SW24, camera 4 is dis-
played on monitor 2. In this example, camera 4 and monitor 3 are also connected, as well as camera 8 and monitor 4.
Spot and Sequence
Two basic operations of the Matrix Switcher are the SPOT
and SEQUENCE functions. In the SPOT mode a specific
camera is continuously connected to a specific monitor
with no interruption. In the SEQUENCE mode a series of
cameras are displayed in succession on a monitor. If
SW12, SW14 and SW16, of the crosspoint switch array
shown in the previous example, are each closed in a
sequential manner for two seconds, monitor 1 will display
camera images as shown on the right.
Camera 1
SW11
Camera 2
SW12
Camera 3
SW13
Camera 4
SW14
Camera 5
SW15
Camera 6
SW16
Camera 7
SW17
Camera 8
SW18
Monitor 1
SW21 SW31
SW22 SW32
SW23 SW33
SW24 SW34
SW25 SW35
SW26 SW36
SW27 SW37
SW28 SW38
Monitor 2 Monitor 3
Monitor 1
Dwell time: 2 sec. Dwell time: 2 sec.
s
The duration of an camera image in a sequence is
called DWELL TIME.
A sequence pattern which repeats itself continuously, such
as the one shown above, can be stored in the memory
section of the Matrix Switcher.
-6-
SW41
SW42
SW43
SW44
SW45
SW46
SW47
SW48
Monitor 4
Monitor 1 Monitor 1
Dwell time: 2 sec.
s